Hack to (force-)enable cairo Xlib backend on Tiger

my-cairo-hack.patch

diff --git a/Library/Formula/cairo.rb b/Library/Formula/cairo.rb
index 0d4d2aa..a0cfe01 100644
--- a/Library/Formula/cairo.rb
+++ b/Library/Formula/cairo.rb
@@ -8,11 +8,8 @@ class Cairo < Formula
   keg_only :provided_pre_mountain_lion
 
   option :universal
-  # Tiger's X11 is simply way too old
-  option 'without-x', 'Build without X11 support' if MacOS.version > :tiger
 
   depends_on "pkg-config" => :build
-  depends_on :x11 => :optional if MacOS.version > :leopard
   depends_on "freetype"
   depends_on "fontconfig"
   depends_on "libpng"
@@ -40,8 +37,13 @@ class Cairo < Formula
       --enable-quartz-image
     ]
 
-    if build.with? "x11"
-      args << "--enable-xcb=yes" << "--enable-xlib=yes" << "--enable-xlib-xrender=yes"
+    if true #build.with? "x11"
+      args << "--enable-xlib=yes" << "--enable-xlib-xrender=yes"
+      if MacOS.version <= :leopard
+        args << "--enable-xcb=no"
+      else
+        args << "--enable-xcb=yes"
+      end
     else
       args << "--enable-xcb=no" << "--enable-xlib=no" << "--enable-xlib-xrender=no"
     end